#include<stdio.h> int f(int n) { int i,sum=0; for (i = 1; i < n ; i++) { if (n%i == 0) { sum = sum + i; } } return sum; } int main() { int m, n,i,j; scanf("%d%d", &m, &n); for (i = m; i <= n; i++) { if (f(f(i)) == i) { if (i < f(i)) { printf("%d %d\n", i, f(i)); } } } return 0; } |
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